Stuff this in his mouth and pump it up to lock it in.
The smaller portion fits behind the teeth and the wings are stuffed behind the cheeks. Once you start pumping the wings stiffen, making it too big for him to spit out. Eventually it grows to the point where his cheeks are straining and he has no choice but to submit to you.
Inflatable Butterfly Gag Specs and Benefits:
Place the gag into your partner's mouth then inflateOdorless, tasteless silicone material
Note: Take great care to not overinflate this item and cut off your partner's airflowDisclaimer: These products as with all products on this site are supplied AS IS. No warranty is given either implied or expressed. Products are intended as novelty only, and no representation is made or implied as to their suitability or safety for any particular use. Purchasers use the products entirely at their own risk. The manufacturer or re-seller is not liable for any direct, indirect, incidental or consequential damage or loss howsoever arising caused by use or misuse of the products. This includes, but is not limited to, damage to the products and personal injury or damages due to use or misuse.